Performance hacking

I am not sure if it has been discussed elsewhere...

I was just wondering. What is the real technical difference between standard and performance. Besides the seats, carbon fiber, red line, spoiler, etc, there is a difference in performance (pun intended).
If you compare both cars, correct me if I am wrong, there is no real difference. They have the same battery pack, engine, gear box, etc. The difference must be in the drive inverter. If I recall correct, this is software driven. And software ... can be hacked. So I have two questions. What would be the real technical difference between both cars. And if the difference is software, how good is the security ...

I was just wondering :-) ...

cool, buy the 60Kwh and switch to performance! )

"Model S Performance takes electric performance to the next level. Equipped with the 85 kilowatt-hour battery and a high performance drive inverter, Model S Performance accelerates to 60 miles per hour in 4.4 seconds. If driven the same way as Model S, both cars achieve the same efficiency thanks to the unique powertrain design. Model S Performance features unique exterior accents and an interior replete with Alcantara and carbon fiber accents." So is has the "a high performance drive inverter" which the standard does not. I asked in person about this as well thinking just getting a 85KW battery down the road would get me that 4.4 with some other tweaking but there is more to it then that.

Reference link here:

It's also possible that there are some differences in the motor and cabling into battery pack to allow greater current draw from it.

tesla is not the company, who sells a "software upgrade" with a 10K pricetag! Keep in mind, they are cool, innovative and fair so far!!

@Whity Whiteman, I even asked if it was possible to later add the high performance drive inverter after taking delivery of the car and was told it wouldn't be something they can upgrade later. What you buy now it what you keep so that was my motivation for going Performance from day 1!

Did You ever changed the mainboard in an appleLaptop? -)

Not on an Apple but a Windblows based laptop, yes! :)

I was told at the NY store that the electronics were beefed up to handle the difference in current.

I was also told that if you got the base battery and at some point in the future got the a larger pack that you would get all the performance of the larger battery. The Motor, inverter, etc are identical in the three models.

This would imply that there is a software control to limit the current draw based off the battery pack size so you don't blow the batteries or decrease their life radically.

Three models as in 40, 60 and 85kWh normal Model S. Performance is different. It does have different inverter and I suspect quite a bit other differences too (motor and wiring I suspect).

@Timo, steven.maes originally asked the difference between the normal and Performance Model S so I was answering accordingly but yes, I believe you are correct about the Standard in 40, 60 and 85kWh however that you can get those minor bumps just by upgrading the battery.

When Tesla announced the performance version, I believe they mentioned that it would require upgrading the electronics from 800 to 1200 amps.

I believe the performance model has a larger motor as well.

I thought the motor was "hand wound", as in the Sportster.

No offence, however, please realize anything technically serious that you do to your S will likely void the warrantee, and decrease the value for resale.

I know, as I have modified a few fast cars in my life, and never was able to sell them for anything remotely close to what it cost me to modify them.

Do yourself a favor, if you want the peformance version, spnd the extra cash, as it will be worth it in the long run, trust me!

The premise here is incorrect. The analogy to hacking an ICE car is inapplicable.

In an ICE car you can reprogram the engine management firmware to alter things like spark timing, fuel injection timing, fuel flow rate, and many other parameters to trade fuel economy for power.

An EV is much simpler - the more current you put through the motor, the more torque you get, and you get it pretty much instantly since electricity flows at the speed of light.

The only way to increase torque in an EV is to increase the current. Two things affect this:

1. Power supply (bigger battery + bigger power supply electronics)

2. A motor wound to accept more current without blowing up.

To alter these, you need to change the hardware - not just software. Firmware hacks will not achieve this.

Only beefier drive semiconductors, inductors and hotter motor windings can up the performance.

TM told the truth when they said you should order the model that fits your needs, since upgrades are not doable short of wholesale replacement of parts of the hardware.

You will not be able to install software later that makes up the difference.

What Mark said. I can not make my dishwasher work better just by plugging it into a 240 volt outlet instead of 120 volt. I've seen drills and equipment wired into the wrong power source. Yes they do run faster.... for a few short seconds then all the smoke comes out. It's very hard to get that smoke back in.

LOL@Sudre_ I saw Tim the Tool Man Taylor do it on his show every week! ;) Put the smoke back in, reminds me of the last amplifier I bought open box from Best Buy!!

I recall reading in the MVPA fine print that we agree to NOT modify the car in any way. I think this is to ensure that TM is legally protected in case someone gets hurt due to a modification and would also ensure that they have legal grounds to void the warranty.

Then they should make available factory-approved packages of smoke, with built-in re-injectors. >:(

Well, we agree not to tamper with it, save only to the extent permitted by law.

That wording is included in the "Vehicle Design" section. We're not permitted to even attempt to reverse engineer, disassemble, decompile...

This is about protecting their intellectual property, not warranty.

The warranty and limitations of warranty sections don't mention modifications.

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